Agreed, although I am slightly surprised there is not an angle of attack in the unfair contract terms legislation - since he was pushed into agreeing to a contract without first having sight of it. Perhaps the argument is that he should have insisted on seeing the full T&Cs first.
True, although I am sure the OP was well aware of the provenance of the advice he received.
In spite of the poor outcome for the OP, my own feeling is that not all is lost in this situation - since the result may influence behaviour in the future:
They have injured their public reputation, and also educated anyone who reads this account to insist on their statutory rights. I expect a good number of us will be less willing to give them business in the future, and be far more robust in dealing with any problems with them.
The fact that their "costs" scare tactic was quashed is obviously for the greater good - and may make them less likely to attempt that in the future.